Rio Parana (Miocene of Argentina)

Where: Entre Rios, Argentina (27.1° S, 64.5° W: paleocoordinates 27.3° S, 62.2° W)

• coordinate based on political unit

• local area-level geographic resolution

When: Mesopotamico Member (Entre Rios Formation), Tortonian (11.6 - 7.2 Ma)

• Vertebrate fossils come from the lower part of the Entre Rios Formation, a complex succession of continental and marine sediments, called the Mesopotamico level.

• member-level stratigraphic resolution

Environment/lithology: marginal marine; lithology not reported

• Alternating regression/transgression during emplacement of Pampeanas block
• No clear lithostratigraphic units have been determined, fossils come from sedimentary complex with marine and continental components.

Size class: macrofossils

Collection methods: Cheek teeth fragments preserved

Primary reference: P. Bondesio. 1975. Restos de un Protohydrochoerinae (Rodentia, Hidrochoeridae) en el "Mesopotamiense" Plioceno Medio-Tardio) de las Barrancas del rio Parana (Provincia de Entre Rios, Argentina). Ameghiniana 12(3):253-258 [J. Alroy/J. Wertheim/J. Alroy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 13522: authorized by John Alroy, entered by Jill Wertheim on 11.04.2002, edited by Mark Uhen and Carlos Jaramillo

Creative Commons license: CC BY (attribution)

Taxonomic list

Mammalia
 Cetacea -
Pontivaga fischeri n. gen. n. sp.1
Pontivaga fischeri n. gen. n. sp.1 Ameghino 1891 toothed whale
 Cetacea - Iniidae
"Ischyrorhynchus vanbenedeni n. gen. n. sp." = Ischyrorhynchus vanbenedeni1, "Anisodelphis brevirostratus n. gen. n. sp." = Ischyrorhynchus vanbenedeni5, "Saurocetes argentinus n. gen. n. sp." = Saurocetes argentinus2, "Saurocetes obliquus n. sp." = Saurocetes argentinus1, "Saurodelphis acutirostratus n. sp." = Saurocetes argentinus5
"Ischyrorhynchus vanbenedeni n. gen. n. sp." = Ischyrorhynchus vanbenedeni1 Ameghino 1891 toothed whale
"Anisodelphis brevirostratus n. gen. n. sp." = Ischyrorhynchus vanbenedeni5 Ameghino 1891 toothed whale
"Saurocetes argentinus n. gen. n. sp." = Saurocetes argentinus2 Burmeister 1871 toothed whale
"Saurocetes obliquus n. sp." = Saurocetes argentinus1 Burmeister 1871 toothed whale
"Saurodelphis acutirostratus n. sp." = Saurocetes argentinus5 Burmeister 1871 toothed whale
 Cetacea - Cetotheriidae
Palaeobalaena dubia4, "Palaeobalaena bergii" = Palaeobalaena bergi4
"Palaeobalaena bergii" = Palaeobalaena bergi4 Moreno 1882 whale
 Rodentia - Hydrochoeridae
Phugatherium cataclisticum3 Ameghino 1887 caviomorph